n | a(n) |
---|---|
1 | 6 |
2 | 36 |
3 | 126 |
4 | 756 |
5 | 2016 |
6 | 23976 |
7 | 46956 |
8 | 435456 |
9 | 1683576 |
10 | 15128856 |
11 | 36284472 |
12 | 547204896 |
13 | 1088416056 |
14 | 13060989936 |
15 | 58782164616 |
16 | 352913845536 |
17 | 1057916846196 |
18 | 16926689693376 |
19 | 33853322280036 |
20 | 457078896068256 |
21 | 1828085963706576 |
[6,36,126,756,2016,23976,46956,435456,1683576, 15128856,36284472,547204896,1088416056, 13060989936,58782164616,352913845536, 1057916846196,16926689693376,33853322280036, 457078896068256,1828085963706576] |